@misc{indiciae20d7170bc581,
  title = {Selected methods of the U.S. Geological Survey for the analyses of wastewaters},
  author = {Marvin J. Fishman and Eugene Brown},
  year = {1976},
  doi = {10.3133/ofr76177},
  url = {https://pubs.usgs.gov/publication/ofr76177},
  note = {Source identifier: ofr76177}
}